The Sava is the longest river in Slovenia (219 km).The catchment area occupies 53% of all Slovene territory. Both its sources the Sava Bohinjka and Sava Dolinka spring out in Julian Alps and thus place river among Alpine rivers. The Sava Dolinka take its first its source as the karst spring called Nadiža which emerges on west south slopes of Tamar. The waters of Nadiža and its tributaries search for an underground path soon after contacting alluvila gravel at the bottom of the valley. Reaching the lowest level
they strike upon impermeable morainic mound. The water emerges again, this time taking the form of noumerus source, pools and small lakes.This is Zelenci; the second source of the river Sava Dolinka. The waters of Trebiza and Kravnjak from the Karavanke area gather in a periodic lake Ledine near Rateče. wherefrom they flow towards the Ziljica (the Gail). The waters from the Planica valley flow through Zelenci and further on into the Sava and the waters from Karavanke flow through the Ledine lake and then to Drava, therefore the area
Weather in Kranjska gora
we are talking about is in fact a watershed.
Gornjesavska dolina or Dolina (The Upper Sava Valley) lies in the utmost nort west part of Slovenia. It is of tectonic and glacial origin. From under the Ponce, Jalovec, Mala Mojstrovka and Velika Mojstrovka, the Planica glacier shoved its terminal moraines along the Dolina to the very foothills of Karavanke. On this undulating wooded area between Rateče and Zelenci some eratic blocks can still be observed and it is after them that the area was named Kamnje (Stones). During the glacial periods
and even later the waters fowing down from the glaciers brought enormous quantities of gravel from the steep slopes and deposited it in the Dolina, forming alluvial cones (the Planica cone and the Podkoren cone). The Podkoren cone, on which the village Podkoren rests, damed the Sava and thus formed a large Podkoren lake, what reamins of it today is the emerald coloured Zelenci lake and the Blato swamp.
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Zelenci Kranjska Gora at winter

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